Don't do it. Haha. I know you probley do not have a choice though. Haha. Seriously though, I am moving to either Fort Lauderdale or possibly back to Charlotte in May. Originally form Charlotte, Providence High School/ Lived near the Ballantyne South Charlotte area. What you will find about mobile business in the north in my opinion, is that the climate and weather only allow you to detail 7-8 months out of the year. When it gets cold, people stay in, the weather is bad and the last thing people think about is keeping their car clean.
Here in Ohio it rains/or snows easily 4 times a week. So, people are less likely to spend 150 to have their car detailed on a regular basis. I feel up here car's are definately viewed as just transportation, and alot of car owners really do not care about their cars. Not everyone, but alot of people have this view!
When I was in Charlotte I can remember my dad feeling embarassed driving a dirty car. Nice weather, there is no excuse not to keep you car looking good is what he would say. Plus being a up and coming city, big banking industry, sports teams, cars are an extension of ones personality down there! Plus your business clientele I am sure is great, and with the economy in the shape it's in, it might take you twice as long in PA to get you where you are now!
I hate that you are leaving Charlotte, awesome place. And if I was moving there, I would definately consider talking to you about your business. Good luck to you and your future. Hope I shared some decent info for you.